Senior Data Scientist (Marketing)

Location: Hybrid work with 2 recommended office days per week; remote work is available under hirify.global's workation policy for up to 90 days per year in the EU, including up to 21 days globally, and 21 days worldwide for non-EU citizens.

Salary: €67,700–€91,500 gross annually, excluding 8% holiday pay.

Company

hirify.global is a second-hand marketplace founded in Lithuania, with marketplace, shipping, and payments business units serving members across Europe and beyond.

What you will do

• Develop, calibrate, and scale Bayesian Media Mix Models and ROI frameworks for marketing measurement.
• Build and maintain econometric, statistical, user value, GMV, and engagement models.
• Design automated model validation, reliability metrics, and health-monitoring frameworks.
• Develop intelligent data products, including self-healing models, using AI and automation.
• Partner with decision scientists and marketing leaders to connect model outputs with business decisions.
• Maintain rigorous standards for code quality, validation, reproducibility, and model reliability.

Requirements

• Hands-on experience with advanced statistical, econometric, or time-series modelling.
• Strong knowledge of advanced statistics, causal inference, and regression.
• High proficiency in Python and experience building modular, reproducible, production-grade data products.
• Master’s or PhD degree in Statistics, Econometrics, Mathematics, Data Science, or a related quantitative discipline.
• Ability to read scientific papers and apply advanced research methods to complex problems.
• Strong communication skills for technical and leadership audiences.

Nice to have

• Experience with marketing measurement or Media Mix Modeling.
• Familiarity with probabilistic programming, such as PyMC.

Culture & Benefits

• Hybrid work model with flexibility to work from home and collaborate in the office.
• 25 days of paid annual leave and a confidential Employee Assistance Program for employees and families.
• Annual learning budget starting at €3,000, plus up to 10 working days over two years for development.
• Share options, pension plan, flexible benefits budget, lunch benefit, and public-transport commute support.
• MacBook, home-office equipment, and up to €540 for home workplace furniture.
• Team-building events, company bike leasing, shopping budget, and a dog-friendly office.